Resumo

PEROZO, María de los Ángeles  e  RINCON ORTIZ, Jean Carlos. Hydraulic evaluation of a bridge over a river with mixed flow and live bed. RIHA [online]. 2015, vol.36, n.1, pp. 16-30. ISSN 1680-0338.

This work presents the hydraulic evaluation of the bridge over the creek Atarigua at the junction with the trunk 7 of Lara state, which is characterized by mixed flow. This analysis was performed considering live bed, in order to evaluate the bridge from a broader and more real context. Two mathematical models were used, the HEC - HMS for hydrologic analysis of the watershed contributing to the study site and the HEC-RAS for hydraulic analysis of the bridge. It was concluded according to the results of the model that the creek presents aggradation and degradation of the channel. The reach of the river with more erosion was obtained immediately downstream of the bridge. This is controlled by the existing energy-dissipating structure.

Palavras-chave : hydraulic evaluation; model; bridge; sediment.

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